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Average Weather in Ixtapa-Zihuatanejo Mexico

In Ixtapa-Zihuatanejo, the wet season is oppressive and overcast, the dry season is muggy and partly cloudy, and it is hot year round. Over the course of the year, the temperature typically varies from 75°F to 91°F and is rarely below 72°F or above 94°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature in Ixtapa-Zihuatanejo12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecwarmhot
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

In Ixtapa-Zihuatanejo, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Ixtapa-Zihuatanejo begins around November 3 and lasts for 6.9 months, ending around June 1. On March 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 71% of the time, and overcast or mostly cloudy 29% of the time.

The cloudier part of the year begins around June 1 and lasts for 5.1 months, ending around November 3. On September 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 93% of the time, and clear, mostly clear, or partly cloudy 7% of the time.

Cloud Cover

Cloud Cover in Ixtapa-Zihuatanejoclearerclearercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecSep 1593%Sep 1593%Mar 129%Mar 129%Nov 362%Nov 362%Jun 162%Jun 162%overcastmostly cloudypartly cloudymostly clearclear
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Ixtapa-Zihuatanejo varies very significantly throughout the year.

The wetter season lasts 4.2 months, from June 6 to October 13, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 68% on September 12.

The drier season lasts 7.8 months, from October 13 to June 6. The smallest chance of a wet day is 0% on April 13.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 68% on September 12.

Daily Chance of Precipitation

Daily Chance of Precipitation in Ixtapa-Zihuatanejowetdrydry0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecSep 1268%Sep 1268%Apr 130%Apr 130%Jan 13%Jan 13%Jun 635%Jun 635%Oct 1334%Oct 1334%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Ixtapa-Zihuatanejo experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.9 months, from May 9 to February 7, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 12, with an average total accumulation of 8.2 inches.

The rainless period of the year lasts for 3.1 months, from February 7 to May 9. The least rain falls around April 7, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Ixtapa-Zihuatanejo varies over the course of the year. In 2017, the shortest day is December 21, with 11 hours, 5 minutes of daylight; the longest day is June 21, with 13 hours, 11 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 6:40 AM on April 1, and the latest sunrise is 1 hour, 3 minutes later at 7:43 AM on October 28. The earliest sunset is at 6:09 PM on November 22, and the latest sunset is 2 hours, 16 minutes later at 8:25 PM on July 6.

Daylight saving time (DST) is observed in Ixtapa-Zihuatanejo during 2017, starting in the spring on April 2, lasting 6.8 months, and ending in the fall on October 29.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in Ixtapa-Zihuatanejo2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDecApr 16:40 AMApr 16:40 AM8:25 PMJul 68:25 PMJul 6Nov 226:09 PMNov 226:09 PM7:43 AMOct 287:43 AMOct 28Apr 2DSTApr 2DSTDSTOct 29DSTOct 29daynightnightnightnight
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Ixtapa-Zihuatanejo experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.8 months, from April 26 to January 20, during which time the comfort level is muggy, oppressive, or miserable at least 58% of the time. The muggiest day of the year is September 13, with muggy conditions 100% of the time.

The least muggy day of the year is March 19, with muggy conditions 44% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in Ixtapa-Zihuatanejomuggy0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMar 1944%Mar 1944%100%Sep 13100%Sep 13Apr 2658%Apr 2658%Jan 2058%Jan 2058%miserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Ixtapa-Zihuatanejo experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.5 months, from February 27 to October 10, with average wind speeds of more than 3.2 miles per hour. The windiest day of the year is September 14, with an average hourly wind speed of 3.8 miles per hour.

The calmer time of year lasts for 4.6 months, from October 10 to February 27. The calmest day of the year is December 6, with an average hourly wind speed of 2.7 miles per hour.

Average Wind Speed

Average Wind Speed in Ixtapa-Zihuatanejowindy0 mph1 mph2 mph3 mph4 mph5 mph6 mphJanFebMarAprMayJunJulAugSepOctNovDecSep 143.8 mphSep 143.8 mphDec 62.7 mphDec 62.7 mphFeb 273.2 mphFeb 273.2 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Ixtapa-Zihuatanejo is from the west throughout the year.

Wind Direction

Wind Direction in Ixtapa-Zihuatanejo0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecwestsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Ixtapa-Zihuatanejo is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.3 months, from June 23 to October 2, with an average temperature above 85°F. The day of the year with the warmest water is August 5, with an average temperature of 86°F.

The time of year with cooler water lasts for 2.9 months, from February 10 to May 6, with an average temperature below 82°F. The day of the year with the coolest water is March 26, with an average temperature of 81°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.5 months, from March 5 to May 22, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest day of the year is April 19, with an average of 7.1 kWh.

The darker period of the year lasts for 6.4 months, from June 27 to January 9, with an average daily incident shortwave energy per square meter below 4.8 kWh. The darkest day of the year is October 9, with an average of 4.2 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in Ixtapa-Zihuatanejobrightdark0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhJanFebMarAprMayJunJulAugSepOctNovDecApr 197.1 kWhApr 197.1 kWhOct 94.2 kWhOct 94.2 kWhMar 56.5 kWhMar 56.5 kWhMay 226.5 kWhMay 226.5 kWhJun 274.8 kWhJun 274.8 kWhJan 94.8 kWhJan 94.8 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Ixtapa-Zihuatanejo are 17.643 deg latitude, -101.552 deg longitude, and 171 ft elevation.

The topography within 2 miles of Ixtapa-Zihuatanejo contains very significant variations in elevation, with a maximum elevation change of 1,903 feet and an average elevation above sea level of 318 feet. Within 10 miles contains very significant variations in elevation (3,435 feet). Within 50 miles also contains extreme variations in elevation (9,357 feet).

The area within 2 miles of Ixtapa-Zihuatanejo is covered by cropland (53%), water (22%), and trees (15%), within 10 miles by water (48%) and cropland (33%), and within 50 miles by water (50%) and trees (29%).

Data Sources

This report illustrates the typical weather in Ixtapa-Zihuatanejo, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Ixtapa-Zihuatanejo is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Ixtapa-Zihuatanejo, according to the International Standard Atmosphere .

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.